If a French-speaking person gives you shit for pronouncing words in French wrong, dare them to say "LinkedIn" in the presence of your English-speaking fluency and try to not humiliate themselves. Maybe first bait then with one they can do, like "Facebook" before crushing their spirits.
Like we could get mean with "squirrel" or "thorough" or "hedgehog", but those are less reasonable that they'd have fucking consistent practice with.